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Maintenance Procedure

GR2K-GA-0015 8-29

Ver. 07-02

system is standby. Refer to the Figure 8-27 of the result of show router

command.

The above is the procedure for replacing the standby system BCU or the

standby system CPU fan with the power supply on.

8.4.4 Expansion or Reduction of Physical Memory

The physical memory units for BCUs and RPs can be expanded on the standby side

of a duplex router while operating. This subsection provides examples of typical

concurrent physical memory upgrade.

(1) Concurrent Upgrade of BCU Memory while Power is On

To expand the BCU memory, the BCU (RM-CPU board) must be removed from the

router. Therefore, memory expansion on the active side cannot be performed during

operation. To expand the memory of both BCUs on a duplex router, expand the

memory on the standby side, and then swap the system and expand the memory on

the new standby side.

Figure 8-32 shows the steps for expanding the standby BCU memory while the power

is on. Details of each step follow the figure.

Figure 8-32 Procedure for Replacing Standby BCU

Step 1. Configure-off the standby BCU:

See Subsection 8.3.1, item 1 Step 1.

Step 2. Remove the standby BCU:

See Subsection 8.3.1, item 1 Step 2.

WARNING: Hazardous voltage. Can cause death or severe injury. Removing/adding

component while power is on must be conducted by trained and qualified

engineer or maintenance personnel.

Configure-off the standby BCU by executing the

close standby command from the active side.

Step 1

Remove the standby BCU

Expand memory units on the removed standby

BCU (RM-CPU board).

Install the standby BCU again.

Configure-on the standby BCU by executing the

free

standby

command from the active side.

Step 2

Step 3

Step 4

Step 5

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Hitachi GR2000 Series Manual do Utilizador Página 291